<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="lab3-1.css">
    <title>lab3-1</title>
</head>
<body>
    <section class="box content-box">
        <p>Content Box</p>
    </section>
    <section class="box border-box">
        <p>Border Box</p>
    </section>
</body>
</html>